Cover for a turbine roof ventilator



FIG. 1 is a top plan view of a cover for a turbine roof ventilator, embodying my new design;

FIG. 2 is a side elevational view thereof, the opposite side being the same as the side shown;

FIG. 3 is another side elevational view thereof showing the cover rotated 90 degrees from FIG. 2, the opposite side being the same as the side shown; and

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a cover for a turbine roof ventilator, substantially as shown and described. 